Naeem, Ali, and Sareeh Al-Fadhli. “Special Training According to Centrifigural Force Law on Some Physical Abilities In The Second Curve and Achieving 400 M Hurdlers”. Journal of Physical Education, vol. 32, no. 1, Mar. 2020, pp. 90-94, https://doi.org/10.37359/JOPE.V32(1)2020.973.